⚖️ Weight & Mass
stone to kg Converter
Convert stone to kg instantly with a reference conversion table.
Quick answer: To convert stone to kg, multiply by 6.35029. For example, 1 stone = 6.35029 kg. Use the calculator below for any value.
stone to kg
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Common conversions
| stone | kg |
|---|
Formula:
How to convert stone to kg
1
Enter your value
Type the number of stone you want to convert into the left box. The result in kg appears instantly in the right box. You can also type into the right box to convert in the other direction.
2
Use the swap button
Click the ⇄ Swap button to reverse the conversion — kg to stone. Your current value carries across so you don't have to re-enter anything.
3
About stone and kg
stone and kg are common weight measurements.
💡 Did you know?
14 lb to the stone, 6.35029 kg to the stone — Britain is the only major country still using stones for body weight. Hospital records, gym apps, and bathroom scales in the UK default to stones, often as 'st lb' (e.g. 11st 4lb).
📊 Common conversions at a glance
| stone | kg |
|---|---|
| 5 | 31.75 |
| 6 | 38.1 |
| 7 | 44.45 |
| 7.5 | 47.63 |
| 8 | 50.8 |
| 9 | 57.15 |
Reviewed for 2026. stone ↔ kg conversion factor verified against published reference data. Built by a UK-based qualified primary teacher and FA Level 2 coach as part of 247QuickTools' free utility-tools project.